EP 2241584 A4 20110216 - PROCESS FOR PRODUCING POLYALKYLENE OXIDE

Title (en)

PROCESS FOR PRODUCING POLYALKYLENE OXIDE

Title (de)

VERFAHREN ZUR HERSTELLUNG VON POLYALKYLENOXID

Title (fr)

PROCÉDÉ DE PRODUCTION D'OXYDE DE POLYALKYLÈNE

Publication

EP 2241584 A4 20110216 (EN)

Application

EP 09704702 A 20090121

Priority

JP 2009050851 W 20090121
JP 2008015340 A 20080125

Abstract (en)

[origin: EP2241584A1] The present invention aims to provide a method for producing a polyalkylene oxide, which is capable of improving reduction in reactivity of a double metal cyanide complex catalyst in the case that a low molecular weight initiator is used, and producing the polyalkylene oxide with high productivity at low cost. The method for producing a polyalkylene oxide comprises carrying out a ring-opening addition reaction of an alkylene oxide with an initiator having at least one hydroxy group and having a molecular weight of not more than 300 per hydroxy group in the presence of a double metal cyanide complex catalyst in an organic solvent, wherein the organic solvent is used in an amount of 500 to 1,500 parts by weight relative to 100 parts by weight of the alkylene oxide used at the start of the reaction.

IPC 8 full level

C08G 65/28 (2006.01); C08G 65/00 (2006.01); C08G 65/10 (2006.01)

CPC (source: EP US)

C08G 65/2663 (2013.01 - EP US); C08G 65/2696 (2013.01 - EP US)

Citation (search report)

[X] WO 02066528 A2 20020829 - ARCO CHEM TECH [US]
[X] EP 1870425 A1 20071226 - BAYER MATERIALSCIENCE LLC [US]
[A] US 3941849 A 19760302 - HEROLD ROBERT JOHNSTON
[A] US 2003204045 A1 20031030 - HOFMANN JORG [DE], et al
[A] WO 03020422 A1 20030313 - BAYER AG [DE], et al
[A] WO 9852689 A1 19981126 - ARCO CHEM TECH [US], et al
[A] WO 0064963 A1 20001102 - BAYER AG [DE], et al

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

DOCDB simple family (publication)

EP 2241584 A1 20101020; EP 2241584 A4 20110216; EP 2241584 B1 20120321; AT E550367 T1 20120415; CN 101925631 A 20101222; CN 101925631 B 20130116; JP 5624324 B2 20141112; JP WO2009093599 A1 20110526; US 2011028682 A1 20110203; US 8481788 B2 20130709; WO 2009093599 A1 20090730

DOCDB simple family (application)

EP 09704702 A 20090121; AT 09704702 T 20090121; CN 200980103104 A 20090121; JP 2009050851 W 20090121; JP 2009550529 A 20090121; US 86391909 A 20090121